320331320303213 has 4 divisors (see below), whose sum is σ = 322776597557568. Its totient is φ = 317886043048860.

The previous prime is 320331320303177. The next prime is 320331320303279. The reversal of 320331320303213 is 312303023133023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320331320303213 - 2⁶ = 320331320303149 is a prime.

It is a super-2 number, since 2×320331320303213² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320331320363213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1222638626981 + ... + 1222638627242.

It is an arithmetic number, because the mean of its divisors is an integer number (80694149389392).

Almost surely, 2^{320331320303213} is an apocalyptic number.

It is an amenable number.

320331320303213 is a deficient number, since it is larger than the sum of its proper divisors (2445277254355).

320331320303213 is a wasteful number, since it uses less digits than its factorization.

320331320303213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2445277254354.

The product of its (nonzero) digits is 17496, while the sum is 29.

Adding to 320331320303213 its reverse (312303023133023), we get a palindrome (632634343436236).

The spelling of 320331320303213 in words is "three hundred twenty trillion, three hundred thirty-one billion, three hundred twenty million, three hundred three thousand, two hundred thirteen".